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Add system property to skip packet compression threshold validation

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This commit is contained in:
Shane Freeder
2025-06-14 20:29:12 +01:00
parent 549b8d624e
commit 44bc15db40
1 changed files with 6 additions and 3 deletions
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9
proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java
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@@ -39,6 +39,7 @@ public class MinecraftCompressDecoder extends MessageToMessageDecoder<ByteBuf> {
private static final int UNCOMPRESSED_CAP =
Boolean.getBoolean("velocity.increased-compression-cap")
? HARD_MAXIMUM_UNCOMPRESSED_SIZE : VANILLA_MAXIMUM_UNCOMPRESSED_SIZE;
private static final boolean SKIP_COMPRESSION_VALIDATION = Boolean.getBoolean("velocity.skip-uncompressed-packet-size-validation");
private int threshold;
private final VelocityCompressor compressor;
@@ -52,9 +53,11 @@ public class MinecraftCompressDecoder extends MessageToMessageDecoder<ByteBuf> {
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
int claimedUncompressedSize = ProtocolUtils.readVarInt(in);
if (claimedUncompressedSize == 0) {
int actualUncompressedSize = in.readableBytes();
checkFrame(actualUncompressedSize < threshold, "Actual uncompressed size %s is greater than"
+ " threshold %s", actualUncompressedSize, threshold);
if (!SKIP_COMPRESSION_VALIDATION) {
int actualUncompressedSize = in.readableBytes();
checkFrame(actualUncompressedSize < threshold, "Actual uncompressed size %s is greater than"
+ " threshold %s", actualUncompressedSize, threshold);
}
// This message is not compressed.
out.add(in.retain());
return;